Okay kiddo, so have you ever heard of praying to Jesus? Well, the Golden Arrow Holy Face Devotion is a special way that some people pray to Jesus.
Now Jesus had a face, like you and me, but we don't really know what it looked like because there weren't cameras back when he was alive. But some people imagine that Jesus had a very kind and loving face, and they pray to him using certain words that make them feel really close to him.
The Golden Arrow Holy Face Devotion is one of those special prayers. It's a bit like a secret code between Jesus and the people praying - only they understand what it means. The words go like this:
"May the most holy, most sacred, most adorable, most mysterious and unutterable Name of God be praised, blessed, loved, adored and glorified in heaven, on earth, and under the earth, by all the creatures of God, and by the Sacred Heart of Our Lord and Saviour Jesus Christ in the Most Holy Sacrament of the altar. Amen."
Now that might sound like a lot of big words, but basically it means that the person praying really loves Jesus and wants to worship him. They believe that Jesus is really special and deserves all their love and devotion.
So, that's the Golden Arrow Holy Face Devotion in a nut-shell. It's just a really special way of talking to Jesus and telling him how much we love him.